Answer:
2000 milligrams —> 2 grams
6000 milligrams —> 6 grams
7000 milligrams —> 7 grams
10000 milligrams —> 10 grams
I hope I helped you^_^
Step 1. convert 45% into a decimal value
45% = 0.45
step 2. multiply the decimal value with the main number
0.45 *60
step 3. ???
step 4. Profit
Unit price = $3.84/12 = $0.32